tert-Butyl alcohol

  • 2-Methyl-2-propanol
  • tert-Butanol
  • Trimethyl carbinol
  • 2-Methylpropan-2-ol
Formula (CH3)3COH
Description Colorless liquid or colorless or white crystals with a camphor-like odor.
Uses Denaturant for ethanol, mfg flotation agents, flavors, perfumes.

Registry Numbers and Inventories.
CAS 75-65-0
EC (EINECS/ELINCS) 200-889-7
EC Index Number 603-005-00-1
EC Class Highly flammable; Harmful
EC Risk Phrase R 11 20
EC Safety Phrase S 9 16
RTECS EO1925000
RTECS class Tumorigen; Mutagen; Reproductive Effector; Primary Irritant
UN (DOT) 1120
Merck 12,1577
Beilstein/Gmelin 906698
Beilstein Reference 4-01-00-01609
EPA OPP 1505
Swiss Giftliste 1 G-2524
US TSCA Listed
Austrailia AICS Listed
New Zealand Listed
Japan ENCS (MITI) Listed
Korea ECL Listed

Odor Threshold Odor threshold 219 mg/m3
Formula C4H10O
Formula mass 74.12
Melting point, C 25.3
Boiling point, C 82.2
Vapor pressure, mmHg 46 (25 C)
Vapor density (air=1) 2.55
Saturation Concentration 3.96% at 20 C
Evaporization number 1.05 (butyl acetate = 1)
Critical temperature 233
Critical pressure 39.2
Density 0.7887 g/cm3 (20 C)
Solubility in water Soluble
Viscosity 3.38 cp (30 C)
Surface tension 20.7 g/s2
Refractive index 1.38468 (20 C)
Dipole moment 1.7 D (20 C)
Dielectric constant 10.9 (30 C)
Partition coefficient, pKow 0.35
Heat of fusion 6.8 kJ/mol
Heat of vaporization 37.9 kJ/mol
Heat of combustion -2411 kJ/mol

Hazards and Protection.
Storage Keep away from heat, sparks, and flame. Keep away from sources of ignition. Store in a cool, dry, well-ventilated area away from incompatible substances. Flammables-area.
Handling Wash thoroughly after handling. Remove contaminated clothing and wash before reuse. Use only in a well ventilated area. Ground and bond containers when transferring material. Use spark-proof tools and explosion proof equipment. Empty containers retain product residue, (liquid and/or vapor), and can be dangerous. Avoid contact with heat, sparks and flame. Do not get on skin or in eyes. Do not ingest or inhale. Do not pressurize, cut, weld, braze, solder, drill, grind, or expose empty containers to heat, sparks or open flames.
Protection Eyes: Wear appropriate protective eyeglasses or chemical safety goggles as described by OSHA's eye and face protection regulations in 29 CFR 1910.133 or European Standard EN166. Skin: Wear appropriate protective gloves and appropriate protective clothing to prevent skin exposure.
Respirators A full facepiece respirator with organic vapor cartridge may be worn up to 50 times the exposure limit or the maximum use concentration specified by the appropriate regulatory agency or respirator supplier, whichever is lowest. For emergencies or instances where the exposure levels are not known, use a full-facepiece positive-pressure, air-supplied respirator.
Small spills/leaks Avoid runoff into storm sewers and ditches which lead to waterways. Clean up spills immediately, using the appropriate protective equipment. Remove all sources of ignition. Absorb spill using an absorbent, non-combustible material such as earth, sand, or vermiculite. Use a spark-proof tool. A vapor suppressing foam may be used to reduce vapors.
Disposal code 1
Stability Stable at room temperature in closed containers under normal storage and handling conditions.
Incompatibilities Strong oxidizing agents.
Decomposition Carbon monoxide, irritating and toxic fumes and gases, carbon dioxide.

Flash Point,C 11
Autoignition, C 478
Upper exp. limit, % 8.0
Lower exp. limit, % 2.3
Fire fighting Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. Extinguishing media: For small fires, use dry chemical, carbon dioxide, water spray or alcohol-resistant foam. For large fires, use water spray, fog, or alcohol-resistant foam. Use water spray to cool fire-exposed containers. Water may be ineffective. Do NOT use straight streams of water.
Fire potential This chemical is flammable.
Hazards Vapors may form an explosive mixture with air. Vapors can travel to a source of ignition and flash back. Will burn if involved in a fire. Flammable Liquid. Can release vapors that form explosive mixtures at temperatures above the flashpoint. Use water spray to keep fire-exposed containers cool. Water may be ineffective. Material is lighter than water and a fire may be spread by the use of water. Containers may explode in the heat of a fire. Vapors may be heavier than air. They can spread along the ground and collect in low or confined areas.
Combustion products Fire may produce irritating, corrosive and/or toxic gases.
NFPA Health 1
  Flammability 3  
  Reactivity 0  

Poison_Class 4
Exposure effects Repeated eye exposure may cause visual abnormalities including blurred vision and photosensitivity.
   Ingestion May cause gastrointestinal irritation with nausea, vomiting and diarrhea. May cause liver and kidney damage. May cause central nervous system depression, characterized by excitement, followed by headache, dizziness, drowsiness, and nausea. Advanced stages may cause collapse, unconsciousness, coma and possible death due to respiratory failure. Heavy exposure may cause irritation of the eyes, nose and throat; headache; nausea; fatigue; and dizziness.
   Inhalation Inhalation of high concentrations may cause central nervous system effects characterized by headache, dizziness, unconsciousness and coma. Causes respiratory tract irritation. May cause liver and kidney damage. May cause lung damage. Aspiration may lead to pulmonary edema. Vapors may cause dizziness or suffocation. May cause blood changes. May cause burning sensation in the chest.
   Skin Causes skin irritation. May be absorbed through the skin in harmful amounts. Prolonged and/or repeated contact may cause defatting of the skin and dermatitis. May cause cyanosis of the extremities.
   Eyes Vapors can be irritating, causing tearing and pain. Splashes cause inflammation and blurred vision.

First aid
   Ingestion Induce vomiting immediately as directed by medical personnel. Never give anything by mouth to an unconscious person. Call a physician.
   Inhalation Remove from exposure to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. Get medical aid. DO NOT use mouth-to-mouth respiration.
   Skin Flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes. Get medical aid if irritation develops or persists. Wash clothing before reuse.
   Eyes Immediately flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid. Do NOT allow victim to rub or keep eyes closed.

UN number 1120
Response guide 129
Hazard class 3
Packing Group II; III  
USCG Compatatibility Group 20 Alcohols, Glycols
HS Code 2905 14 10  
Std. Transport # 4907841  
IMO Chemical Code 18
IMO Pollution Category III